Stellar super soaker

Jun 15, 2011 By Tammy Plotner
A star is born: Swirling gas and dust fall inward, spurring polar jets, shown in blue in this illustration. Credit: NASA/Caltech

Located in the constellation of Perseus and just a mere 750 light years from Earth, a young protostar is very busy spewing forth copious amounts of water. Embedded in a cloud of gas and dust, the hundred thousand year old infant is blasting out this elemental life ingredient from both poles like an open hydrant – and its fast moving droplets may be seeding our Universe...

“If we picture these jets as giant hoses and the water droplets as bullets, the amount shooting out equals a hundred million times the water flowing through the Amazon River every second,” said Lars Kristensen, a postdoctoral astronomer at Leiden University in the Netherlands and lead author of the new study detailing the discovery, which has been accepted for publication in the journal Astronomy & Astrophysics. “We are talking about velocities reaching 200,000 kilometers [124,000 miles] per hour, which is about 80 times faster than bullets flying out of a machine gun.”

To capture the the quicksilver signature of hydrogen and oxygen atoms, the researchers employed the infrared instruments on-board the European Space Agency’s Herschel Space Observatory. Once the atoms were located, they were followed back to the star where they were formed at just a few thousand degrees Celsius. But like hitting hot black top, once the droplets encounter the outpouring of 180,000-degree-Fahrenheit (100,000-degree-Celsius) gas jets, they turn into a gaseous format. “Once the hot gases hit the much cooler surrounding material – at about 5,000 times the distance from the sun to – they decelerate, creating a shock front where the gases cool down rapidly, condense, and reform as water.” Kristensen said.

Like kids of all ages playing with squirt guns, this exciting discovery would appear to be a normal part of a star “growing up” – and may very well have been part of our own Sun’s distant past. “We are only now beginning to understand that sun-like stars probably all undergo a very energetic phase when they are young,” Kristensen said. “It’s at this point in their lives when they spew out a lot of high-velocity material – part of which we now know is water.”

Just like filling summer days with fun, this “star water” may well be enhancing the interstellar medium with life-giving fundamentals… even if that “life” is the birth of another star. The water-jet phenomenon seen in is “probably a short-lived phase all protostars go through,” Kristensen said. “But if we have enough of these sprinklers going off throughout the galaxy – this starts to become interesting on many levels.”

Skip the towel. I’ll let the Sun dry me off.

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Pkunk_
not rated yet Jun 15, 2011
Thats just phenomenal.
Now this IS Nobel worthy reseach. It's very simple now that you think about it .. That the birth of a star is such an energetic event that it can create water and thousands of other basic compounds of life is just obvious , full marks to them for trying to find out something thats been overlooked.
LKD
not rated yet Jun 15, 2011
"Once the hot gases hit the much cooler surrounding material at about 5,000 times the distance from the sun to Earth they decelerate, creating a shock front where the gases cool down rapidly, condense, and reform as water."

Which explains the consistency of Plutoids and the Kuiper belt and comets?
hush1
not rated yet Jun 15, 2011
Yes. The news lends to the imagination. And no way of knowing what happens to so much water.
antialias_physorg
not rated yet Jun 16, 2011
While it may seem like a lot of water you also have to take into account the phenomenal amount of space it is distributed in. A hundred million times the amazon river is not even a small trickle if you distribute it over (even a small fraction of) the surface of a star.

The discovery is very important and interesting, though. It would also be interesting to see if there is any specific distance to the star at which that water comes to a stop as it is continually slowed by gravity and the interaction with the surrounding dust clouds.

(i.e. what kinds of concentrations of water we are talking about when surveying the shock front of the 'hose' and whether that concentration is continually increasing or whetherthe shockfront just keeps moving outward)
eachus
not rated yet Jun 22, 2011
Hmm. Assume that the sun was created in a stellar nursery. These jets from another forming star could account for the LHB (late heavy bombardment), and for how the Earth got its water.

The LHB from 3.8 to 4.1 billion years ago is the period when the moon got most of its craters. On Earth the oldest rocks come from after this period, indicating that the LHB stirred the pot enough that few if any older rocks survived.
hush1
not rated yet Jun 23, 2011
"While it may seem like a lot of water you also have to take into account the phenomenal amount of space it is distributed in." -ap
Everything is mostly space. The comparison misleads.

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